ci: add debug output to coverage upload step

.drone.yml

@@ -32,11 +32,14 @@ steps:
         else COLOR="red"; fi
         curl -sf "https://img.shields.io/badge/coverage-${PCT}%25-${COLOR}.svg" -o coverage.svg
       - |
+        echo "Badge size: $(wc -c < coverage.svg) bytes"
         SHA=$(curl -sf \
           -H "Authorization: token $GITEA_TOKEN" \
           "https://git.cincoeuzebio.com/api/v1/repos/cinco/Tmuxido/contents/badges/coverage.svg?ref=master" \
-          | jq -r '.sha // empty')
+          | jq -r '.sha // empty' || echo "")
+        echo "Existing SHA: '${SHA}'"
         CONTENT=$(base64 -w 0 coverage.svg)
+        echo "Content length: ${#CONTENT}"
         if [ -n "$SHA" ]; then
           PAYLOAD=$(jq -n --arg msg "ci: update coverage badge [CI SKIP]" \
             --arg content "$CONTENT" --arg sha "$SHA" --arg branch "master" \
@@ -46,11 +49,13 @@ steps:
             --arg content "$CONTENT" --arg branch "master" \
             '{message: $msg, content: $content, branch: $branch}')
         fi
-        curl -fsSL -X PUT \
+        RESPONSE=$(curl -s -X PUT \
           -H "Authorization: token $GITEA_TOKEN" \
           -H "Content-Type: application/json" \
           "https://git.cincoeuzebio.com/api/v1/repos/cinco/Tmuxido/contents/badges/coverage.svg" \
-          -d "$PAYLOAD"
+          -d "$PAYLOAD")
+        echo "API response: $RESPONSE"
+        echo "$RESPONSE" | jq -e '.content.sha' > /dev/null
 
 ---
 kind: pipeline